The glass line
Glass Door and Patch Fitting Service in Charlotte, NC
Describe how the glass door is moving and where it catches. Call (984) 253-8579.
Door type identifier
Sorts a glass entrance into all-glass with patch fittings or narrow-stile aluminum from three things you can see from where you are standing, because the two carry different hardware and fail differently.
Answer what you can see; the full decision table is printed below and is the whole of the logic applied.
| What you see | What it is | Parts implication |
|---|---|---|
| Full-height stile carrying the hardware | Narrow-stile aluminum door with glass infill | Hookbolts, deadlatches and exit devices serviced conventionally; a bottom rail separating from the glass is a repairable condition |
| Clamped patches at the corners, no full stile | All-glass door on patch fittings | Load runs through top and bottom patches into a pivot and floor closer; a chipped or drilled tempered leaf is a replacement, never a repair |
| Neither patches nor a bare-glass lock edge | Probably a framed storefront leaf rather than either glass type | Conventional storefront hardware; describe it on the phone and it gets sorted in a minute |
| Cover plate in the floor | A floor closer is present (either type, more common on all-glass) | Closer work means lifting the leaf out — a two-person job with the opening out of service |
A glass door that has dropped is telling you about its fittings
All-glass and narrow stile doors hide their hardware. There is no visible closer, no obvious hinge, and when one starts to sag or bind the natural assumption is that the glass has moved. It has, but the glass is the symptom. The load path on an all-glass door runs through the top and bottom patch fittings into a pivot, and on the bottom into a floor closer buried in a cement case under the finished floor. Everything that goes wrong goes wrong there.
Glass door work we take on
Repair, adjustment and hardware replacement on existing glass door lines. Cutting or supplying tempered glass is a glazier's job and we bring one in rather than pretending otherwise — a tempered leaf cannot be trimmed, drilled or modified after manufacture, so a fitting change that needs a new hole in the glass is a new leaf.
Top and bottom patch fittings
The clamped hardware at the corners of an all-glass leaf, and the part that takes the whole weight of the door plus every shove it receives. Loose or worn patches show as a leaf that drops on the free edge, catches on the threshold, or has developed a rattle. Re-torquing without inspecting the gasket inside the patch is a temporary fix that tends to come back within the season.
Floor closers and their cement cases
A floor closer is a sealed unit sitting in a case set into the slab, and it fails in two ways: the closer itself weeps oil and stops holding an adjustment, or the case takes on water and corrodes around it. The second one is worse and it is more common near an exterior line where the threshold has been letting water past for years. Either way the leaf has to come out to get at it.
Pivots, spindles and the alignment above them
The top pivot on a glass line is usually adjustable and is where a surprising number of binding complaints actually resolve. If the top pivot has drifted, the leaf swings out of plumb and puts a load on the bottom patch that it was not designed to take, which then damages the expensive part.
Rails, locks and header hardware on narrow stile entries
Narrow stile aluminum doors with glass infill are a different animal from all-glass and get confused with them constantly. They have a proper stile carrying the hardware, which means hookbolt locks, deadlatches and exit devices can be worked on conventionally — and it means a bottom rail that has separated from the glass is a repairable condition rather than a replacement.
Things that move a glass door figure
| Factor | Effect | How often it applies |
|---|---|---|
| Whether the leaf has to come out | Large. It is a two-person lift with the opening out of service while it is done. | Any floor closer or bottom patch work |
| Floor closer versus surface hardware | Large. One means opening the floor, the other does not. | Common on older all-glass entries |
| Condition of the cement case | Large where it has corroded, because the case may need replacing rather than the closer. | Mostly on exterior lines with a history of water |
| Whether the glass itself is damaged | Decisive. Tempered glass cannot be repaired or modified, so a chipped or drilled leaf is a replacement. | Occasional |
| Finish and manufacturer of existing patches | Moderate. Matching a discontinued patch finish adds lead time and sometimes forces replacing a matched pair. | Frequent on buildings over about fifteen years |
| Access and building hours | Moderate. A main glass entrance usually cannot be out of service at midday. | Most occupied buildings |
Nothing is quoted from a photograph on this line. The parts that decide the number are under the floor.
How we approach the glass line
The diagnosis starts at the bottom patch, not at the glass
Which sounds obvious and is the opposite of what most callers have been told.
Glazing is handed to a glazier
We work the hardware. Tempered glass supply and installation goes to somebody who does it every day, and you are told that before the visit rather than during it.
Patch fittings and pivots are carried, not ordered
Common top and bottom patches and pivot sets sit in the van, which is only economic because the building stock being served is one city's worth.
How a glass door call runs
- 1. Describe how it moves
Does it catch at the leading edge or the hinge edge, does it fail to close the last few inches, does it swing past where it should, has it started to rattle.
- 2. Establish which type it is
All-glass with patches, or narrow stile with a rail. Two different jobs and two different parts lists, and the caller usually does not know which they have.
- 3. Check the top pivot before assuming the bottom
It adjusts, correcting it costs very little, and it sits upstream of the parts that do not.
- 4. Read the floor closer's behaviour
Whether it holds an adjustment, whether it is weeping, and whether the cover plate is sitting proud of the finished floor, which is often the first sign the case has moved.
- 5. Lift the leaf if it has to come out
Two people, opening out of service, scheduled with the building rather than sprung on it.
- 6. Reset and re-check under load
Adjusted, closed onto the strike repeatedly, and checked that it still latches from a half-open release rather than only from wide open.
- 7. Say what is next on that opening
Glass doors give warning before they fail properly. If a matched pair is going the same way, you hear it now rather than in three months.